The fifth most-popular move in this position, only played in a handful of games. Black prepares to capture the bishop, taking advantage of the fact that White didn't have time to play the prophylactic h2-h3.
8. e1g1  8... b8c6  9. b1c3 The opening transposed into a position that normally occurs in the move order of the Queen's Gambit Declined. 9... d5c4  10. e2c4 